<?php

/*
	Question2Answer (c) Gideon Greenspan

	http://www.question2answer.org/

	
	File: qa-include/qa-page-unanswered.php
	Version: See define()s at top of qa-include/qa-base.php
	Description: Controller for page listing recent questions without answers


	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	More about this license: http://www.question2answer.org/license.php
*/

if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
    header('Location: ../');
    exit;
}

require_once QA_INCLUDE_DIR . 'qa-db-selects.php';
require_once QA_INCLUDE_DIR . 'qa-app-format.php';
require_once QA_INCLUDE_DIR . 'qa-app-q-list.php';


//	Get list of unanswered questions, allow per-category if QA_ALLOW_UNINDEXED_QUERIES set in qa-config.php

if (QA_ALLOW_UNINDEXED_QUERIES)
    $categoryslugs = qa_request_parts(1);
else
    $categoryslugs = null;

$countslugs = @count($categoryslugs);
$by = qa_get('by');
$start = qa_get_start();
$userid = qa_get_logged_in_userid();

switch ($by) {
    case 'selected':
        $selectby = 'selchildid';
        break;

    case 'upvotes':
        $selectby = 'amaxvote';
        break;

    default:
        $selectby = 'acount';
        break;
}

list($questions, $categories, $categoryid) = qa_db_select_with_pending(
    qa_db_unanswered_qs_selectspec($userid, $selectby, $start, $categoryslugs, false, false, qa_opt_if_loaded('page_size_una_qs')),
    QA_ALLOW_UNINDEXED_QUERIES ? qa_db_category_nav_selectspec($categoryslugs, false, false, true) : null,
    $countslugs ? qa_db_slugs_to_category_id_selectspec($categoryslugs) : null
);

if ($countslugs) {
    if (!isset($categoryid))
        return include QA_INCLUDE_DIR . 'qa-page-not-found.php';

    $categorytitlehtml = qa_html($categories[$categoryid]['title']);
}

$feedpathprefix = null;
$linkparams = array('by' => $by);

switch ($by) {
    case 'selected':
        if ($countslugs) {
            $sometitle = qa_lang_html_sub('main/unselected_qs_in_x', $categorytitlehtml);
            $nonetitle = qa_lang_html_sub('main/no_una_questions_in_x', $categorytitlehtml);

        } else {
            $sometitle = qa_lang_html('main/unselected_qs_title');
            $nonetitle = qa_lang_html('main/no_unselected_qs_found');
            $count = qa_opt('cache_unselqcount');
        }
        break;

    case 'upvotes':
        if ($countslugs) {
            $sometitle = qa_lang_html_sub('main/unupvoteda_qs_in_x', $categorytitlehtml);
            $nonetitle = qa_lang_html_sub('main/no_una_questions_in_x', $categorytitlehtml);

        } else {
            $sometitle = qa_lang_html('main/unupvoteda_qs_title');
            $nonetitle = qa_lang_html('main/no_unupvoteda_qs_found');
            $count = qa_opt('cache_unupaqcount');
        }
        break;

    default:
        $feedpathprefix = qa_opt('feed_for_unanswered') ? 'unanswered' : null;
        $linkparams = array();

        if ($countslugs) {
            $sometitle = qa_lang_html_sub('main/unanswered_qs_in_x', $categorytitlehtml);
            $nonetitle = qa_lang_html_sub('main/no_una_questions_in_x', $categorytitlehtml);

        } else {
            $sometitle = qa_lang_html('main/unanswered_qs_title');
            $nonetitle = qa_lang_html('main/no_una_questions_found');
            $count = qa_opt('cache_unaqcount');
        }
        break;
}


//	Prepare and return content for theme

$qa_content = qa_q_list_page_content(
    $questions, // questions
    qa_opt('page_size_una_qs'), // questions per page
    $start, // start offset
    @$count, // total count
    $sometitle, // title if some questions
    $nonetitle, // title if no questions
    QA_ALLOW_UNINDEXED_QUERIES ? $categories : null, // categories for navigation (null since not shown on this page)
    QA_ALLOW_UNINDEXED_QUERIES ? $categoryid : null, // selected category id (null since not relevant)
    false, // show question counts in category navigation (null since not relevant)
    'unanswered/', // prefix for links in category navigation (null since no navigation)
    $feedpathprefix, // prefix for RSS feed paths (null to hide)
    qa_html_suggest_qs_tags(qa_using_tags()), // suggest what to do next
    $linkparams, // extra parameters for page links
    $linkparams // category nav params
);

/*$qa_content['navigation']['sub'] = qa_unanswered_sub_navigation($by, $categoryslugs);*/


return $qa_content;


/*
	Omit PHP closing tag to help avoid accidental output
*/